Grain drill



July 17, 1951 E. E, SCHNELL 2,561,236

' 1 INVENTOR ERNST E. SCHNELL July 17, 1951 y E. E..scHNE| 2,561,236

GRAIN DRILL Filed Nov. l, 1946 2 Sheets-Sheet 2 Y INVENTOR l ERNS E.SCHNELL BY /r l J ToRNEYs Patented July 17, 1951 GRAIN DRILL Ernst E.Schnell, Horicon, Wis., assignor to John Deere Van Brunt Company,v acorporation of Wisconsin Application November 1, 1946, Serial No.707,121

11 Claims. (Cl. i4-469) The present invention relates generally toagricultural implements and more particularly to planting implements,such as grain drills and the like, wherein seeding mechanism is adaptedto be moved into or out of gear at the same time furrow forming toolsare raised or lowered.

The object and general nature of the present invention is the provisionof a new and improved throwout mechanism, especially adapted for graindrills, so constructed and arranged that the seeding mechanism is thrownout of gear as soon as the furrow openers are raised substantially up toground level and before they are raised out of the ground, whereby noseed is deposited on the surface of the soil. Another feature ofimportance is the provision of a bearing support for the pressure shaftof a grain drill in which the arm controlling the gear hanger is mountedon the bearing support, the parts being so constructed and arranged asto facilitate assembly and in which only one part` serves to hold thebearing bushing in place on the bearing bracket and at the same timeautomatically holds the gear hanger operating arm in place on thebearing bushing which rocks with the pressure shaft.

These and other objects and advantages of the present invention will beapparent to those skilled in the art after a consideration of thefollowing detailed description, taken in conjunction with theaccompanying drawings in which:

Figure l is a fragmentary end View of a grain drill in which theprinciples of the present invention have been incorporated.

Figure 2 is an end View of the throwout mechanism, corresponding to aview taken generally along the line 2 2 of Figure 1.

Figure 3 is a fragmentary top or plan view, taken generally along theline 3-3 of Figure 1, showing the socket connection between the throwoutarm and the bearing member on the throwout link.

Figure 4 is a side View of the throwout mechn anism, correspondinggenerally to a view taken along the line 4 4 of Figure 2.

Fig. 5 is a perspective view of the throwout arm and associated parts.

Referring now more particularly to Figure 1, the implement in which theprinciples of the present invention have been illustrated comprises a.grain drill, indicated in its entirety by the reference numeral I. Thegrain drill I includes a transversely extending seed box carrying seeddispensing mechanism 4 driven by a seeding shaft 5. The seed box issupported on a main frame 8 which includes two or more generallylongitudinally extending frame members 9 constituting the end members ofthe frame i2. The ends of the seed box are supported on the frame by endmembers l il.

The grain drill i also includes conventional furrow openers which areraised and lowered through pressure rods l5 that are connected at theirupper ends by swivels I6 with the forward ends, respectively, ofpressure arms Il which at their rear ends are fixed to a rockshaft I8.The rockshaft is operated by manual means or power operated means, asdesired, and according to the present invention use is made of therocking movement of the shaft I8 for controlling the drive to the seedshaft 5.

For supporting the rockshaft I8 I provide a pair of bearing brackets 2liwhich are secured, as by bolts 26, to the horizontal flange of theassociated frame angle S. The bracket 25 includes an upwardly directedsection 2l which is apertured, as at 28, to receive a bearing bushing inthe form of a sleeve member 2Q having a main section 3l and an outerflange 32. The bushing 29 is provided with a square opening 33 and theshaft i8, which is also square, is received and supported thereby. Anarm member 35 is mounted on the bushing 23 and includes a hub section 36which encircles the body 3l of the bushing 2S. The arm 35 includes aportion 31 extending radially outwardly and curved to provide an arcuatesocket 33, this portion of the arm member being slotted, as at 33, toreceive an operating link 4l that extends therethrough. The inner end ofthe link 4I is pivotally connected, as at 44, to a gear hanger l5 whichis swingably vmounted on the grain drill frame and carries an upper gear4T that is adapted to mesh with a gear 48 that drives the shaft 5, and alower gear 5l which is adapted to mesh with a gear 52 on a jackshaft 53that is driven in any suitable way. When the hanger 45 is swungrearwardly, the lower gear 5I is swung out of engagement with the driveshaft gear 52, thereby interrupting the drive to the seeding shaft 5.Movement of the link member 4I serves to swing the gear hanger into andout of gear. The outer end of the link 4| carries a knuckle member liliwhich has a cylindrical section 6l adapted to be Seated in the socketportion 38 of the arm member 35. The knuckle member 53 also includes anattaching section 6G which has an opening il therethrough adapted toreceive the link lll, as best shown in Figure 3. A spring 68 encirclesthe outer end of the link 4I and at its inner end bears against 38, isprovided with a laterally directed notched?,

portion l that is dimensioned so that in assem bling the arm 35 on thebushing 29, the notchv clears the lug l2, thereby. permittinggthe arm?member to be readily assembledontothe.buhring 29. After the arm 35 hasbeen rocked a small amount, the two lugs 'il and,1,2engage oppositesides of the narrowed section 'illof the arm member 35, thus holding thearm member in ppsition on the bushing 29. It will be noted that the armmemberV 35 is thus readily mountedY onto .t he bushing 29. A clampcollar til is xedto the inner endof the bushing 2.9, as by a set screw8,1, and, when properly mounted in place bears, against the upper end2l' of the bracketr 2,5. at, one side thereof while. the lug 'l2 bearsagainst` the opposite side of` the associated bracket. This allows, thearm member-35 to rock freely on the bushing; 2,9.. Itvwill also be notedthat, the iiangeV 2,on,the sleeve@ bears against the outside por-ytionof the part. Thus, with the single'attach.- ing; member Bil,thearmand bearing parts are held in assenlbled.` relation,

operationthe rockshait t?, is operated by any suitablemeans so` astoraise and 'lower the tools through the arms Il and the linksv l5. Thelugs;` ll, and l2,y shift downwardly along the rib 'Lftv on. the arm,35V without ocoasioning any movement of the latter. However, thislostmotion is taken, up` when the lugsv ll andv l2, or either. of. them,moving upwardly, iirst come into engagement with the abutment shouldersASGthat aleformed-on the arm member-35,. The member (in. isY adjusted sothat at about the time the furrow, openers-are raised up to about groundlevel butbefore they are clear of. the ground, the lugs H and 'l2 comeup against the shoulders 81,4so that further movement of the rockshaftI8 in the direction-,of the arrow shown in Figure e. will act thrcughhelugs il and 'F2 to rock the arm rear--A wardly. This actsthrough thelinke] toswing the gear-hanger rearwardly, separating theassociatedgears 5i and t2 on the hanger andthe drive shaftit,thusinterrupting thedrive. When therockshaft itY is rockedinthe otherdirection., a, spring. Idil, connectedbetween av Cotter lill c artiedby. the end bracket It., and a bolt, 102 onthe swingable@ gear hanger45,. draws the gear 5| into, driving engagement with the gear 52. Thespring t8 tunctions to keep the cylindrical section El firmly, held. inthe arcuate section 37 of thev arm member 3,5 throughout the adjustmentrange of the link H with the knuckle member 6l). lur ther rockingmovement of thel pressure shaft Ifand the pressure arms Il thereon isaccommodated. by the lllgS 1l, 12 moving freely away from the shoulders.84.

While I haveshown and described above;` the preferred structure in whichthe principles off the presentv invention have been, incorporated, itisto, ber understood that my invention is, not; tov be limited to4 theparticular details shown and de. scribed above, but that, in fact,widely different means may be employed in the practice offthe broaderaspects of my: invention.

What I claim, therefore, and desire to secureby Letters Patent is:

1. In a grain drill, frame means, a rockshaft, mechanism adapted to becontrolled by movement of said rockshaft and including a shiftablemember, means for supporting said rockshaft for rocking movement on saidframe means, an armv operatively connectedwith saidv mechanism, andmounted for movement relative to said rockshaft and a part mounted onsaid rockshaft in abutting relation with respect to said arm andengageable with the latter for shifting said arm whenV said rockshaft ismoved in one direction, Said `De.ft-being, movable away from said armwhen the; rockshaft is moved in the other direction.

2. In a grain drill, a rockshaft, a bearing bracketforA supporting saidrockshaft, a bushing rotatably carried' by said bearing bracket andreceivingV said rockshaft in non-rotatable relation, an arm rockablymounted on said bushing, and abutment. means; acting between saidbushing andsaid arm whereby rocking movement of said rockshaft in atleast one direction acts through said bushing and abutment means forshifting said arm.

3. In` an agricultural implement, a rockable partA having a ange. atoneend and a lug spaced therefrom, an arm member havingy a huby sec-f,tion embracing said rockable part and adapted tobe disposed in the spacebetween said lug and said lia-nge, said hub section having a notchtherein to, accommodate axial movement of said hub sectionover said lugand into position adjacent Said danse,l and an abutment seoton on. saidarm meinberspaced circumferentially from saidndteh whereby said lugengages one side of said hub section` andholds said arm member in a,position between said lug and said flange, said lug being adapted toengage said abutment section of said arm member whereby rocking mover,

ment of said partl in at least one direction acts throughl saidlugagainst said arm member for rocking the latter.

4. In a grain drill, frame means, a bearing bracketixed thereto, abearing bushing rotatably mounted in said bearing bracket, a rockshaftcarried by said bushing and non-rotatably connected therewith, aswinging gear hanger piv-V otally mounted on said frame means, anA armmovably mounted on said bearing bushing, link. means connecting theouter end of said armwith the swinging gear hanger, an: abutment meanson said arm and bearing bushing and adapted when in engagement to causesaid arm to rock withsaid bearing bushing and shaft, rocking of said armacting through said link means to actu-1 ate said swingingI gearhanger'.

5, In a grain drill having feeding mechanism and drive means thereforincluding a swingable, gear hanger, the combination therewith of means.for shifting said gear hanger into and out o f a driving position,comprising a rockable part normally, having movement about anr axisthrough a given range of. movement, an arm movably mounted thereon aboutsaid axis and having an? outer end formed to receive a connecting link,a link member pivotallyconnected. at one en d withslaid gear hanger,v aconnecting member fixed to said link means adjacent the other endthere--v of and. operatively connected with the outer end ofA said arm,and' cooperating abutment means` mounted on said arm and said rockablepart whereby movement of the latterthrough a portion of itsrange ofmovement acts to swing said anniA and shift said gear hangeracerbes 6.The invention set forth in claim 5, further characterized by said armmember having an arcuate socket and a slot extending through saidarcuate portion, a knuckle member adjustably fixed to the outer end ofsaid link means and seated in said arcuate socket, spring means disposedabout the outer end of said link means and bearing against the outerface of said arcuate arm portion, and an abutment member on the outerend of said link means against which the outer end of said spring bears.

7. In an agricultural implement, an apertured bearing bracket, ashaft-receiving bushing carried by said bracket having a cylindricalinner end and a flange at its outer end and insertable into the apertureof said bracket from one side thereof, said bushing also having a pairof axially spaced lugs axially inwardly of said flange, a rockshaftcarried in said bushing, an arm carried on said bushing and including ahub portion embracing said bushing and having an extended notchedportion providing for the mounting of said arm over the inner of saidlugs into a position between said lugs, said arm being rockable aboutsaid bushing so as to carry said notched portion away from said lugswhereby the arm is retained in position on said bushing adjacent saidflange by said lugs, said assembled arm and bushing being then adaptedto be mounted on said bearing bracket by shifting said bushing over theouter end of said shaft and inserting the cylindrical end of saidbushing into the aperture in said bracket, a collar on the other side ofsaid bracket adapted to be fixed to the cylindrical end of said bushingfor holding the latter in said bracket, the inner of said lugs engagingsaid one side of said bracket, and abutment means on said arm adapted tobe engaged by at least one of said lugs whereby rocking movementrelative to said bracket imparted to said bushing by said shaft istransmitted to said arm.

8. In an agricultural implement or the like having a rockshat, and abearing bracket for supporting said rockshaft, the improvementcomprising a bushing rotatably carried by said bearing bracket andreceiving said rockshaft in non-rotatable relation, a pair of axiallyspaced apart lugs on said bushing, an arm adapted to be rotatablymounted on said bushing and disposed with a portion between said axiallyspaced apart lugs, a recessed portion on said arm dimensioned to passover one of said lugs to provide for positioning said arm for rockingmovement between said lugs so as to carry said recessed portion awayfrom said lugs, whereby the latter serves to hold said arm against axialdisplacement relative to the bushing, and abutment means spacedcircumferentially from said recessed portion and adapted to act betweensaid bushing and said arm whereby rocking movement of said rockshaft inat least one direction acts through said bushing and abutment means forshifting said arm.

9. In an agricultural implement or the like having a rockshaft and abearing bracket for supporting said rockshat: the improvement comprisinga bushing adapted to be carried by said bearing bracket and to receivesaid rockshaft in non-rotatable relation, an arm rockably mounted onsaid bushing, and abutment means acting between said bushing and saidarm whereby rocking movement of said rockshaft in at least one directionacts through said bushing and abutment means for shifting said arm.

l0. In a grain drill having frame means, a bearing bracket xed thereto,a rockshaft adapted to be mounted on the frame means for rotationrelative to said bearing bracket, a swinging gear hanger pivotallymounted on said frame means, and link means connected at one end withSaid gear hanger: the improvement comprising a bearing bushing adaptedto be rotatably mounted in said bearing bracket, means for nonrotatablyconnecting said bearing bushing with said rockshat, an arm movablymounted on said bearing bushing, and abutment means on said arm andbearing bushing adapted when in engagement to cause said arm to rockwith said bearing bushing, and means connecting the outer end oi saidarm with the other end 0f said link means whereby rocking of said armwith said bearing bushing and shaft acts through said link means toactuate said swinging gear hanger.

11. In an agricultural implement including frame means, an aperturedbearing bracket carried thereby, and a rockshaft adapted to be mountedfor rocking movement relative to said bearing bracket: the improvementcomprising a shaft-receiving bushing adapted to be carried by saidbracket and having a cylindrical inner end and a flange at its outer endand insertable into the aperture of said bracket from one side thereof,said bushing also having a pair of axially spaced lugs axially inwardlyof said flange, said bushing being apertured to non-rotatably receivesaid rockshait, an arm carried on said bushing and including a hubportion embracing said bushing and having an extended notched portionproviding for the mounting of said arm over the inner of said lugs intoa position between said lugs, said arm being rockable about said bushingso as to carry said notched portion away from said lugs whereby the armis retained in position on said bushing adjacent said iiange by saidlugs, said assembled arm and bushing being then adapted to be mounted onsaid bearing bracket by shifting said bushing over the outer end of saidshaft and inserting the cylindrical end of said bushing into theaperture in said bracket, a collar on the other side of said bracket`adapted to be fixed to the cylindrical end of saidbushing for holdingthe latter in said bracket, the inner of said lugs engaging said oneside of said bracket, and abutment means on said arm adapted to beengaged by at least one of said lugs whereby rocking movement relativeto said bracket imparted to said bushing by said shaft is transmitted tosaid arm.

ERNST E. SCHNELL.

REFERENCES CITED The following references are of record in the file ofthis patent:

UNITED STATES PATENTS Number Name Date 123,196 Pilson Jan. 30, 1872289,949 Winter Dec. 11, 1883 626,822 Baseman June 13, 1889 656,608 MooreAug. 21, 1900 928,720 Ward et al. July 20, 1909 1,185,350 Seaman May 30,1916 1,622,004 Schwagermann Mar. 22, 1927 1,770,641 Brennan July 15,1930 2,277,913 Kesling Mar. 31, 1942

